M. Ohkoshi et al., ANALYSIS BY MAGNETIC PHASE GRATING MODEL FOR DOMAIN-WALL OBSERVATION, Journal of magnetism and magnetic materials, 140, 1995, pp. 1845-1846
The wall image formation associated with the light diffraction in Bi-s
ubstituted iron garnets is analyzed by a magnetic phase grating model.
Thin wall width with high Faraday rotation yields the wall image with
high contrast both in bright field and dark field configurations.